Year	% of GDP
2004	9.643234413332678
2005	9.622300389883689
2006	10.564042551692182
2007	11.296071299937278
2008	10.800136323484002
2009	11.400010453612929
2010	12.645899003854641
2011	12.391019352486227
2012	12.949146042688882
2013	13.652674035102274
2014	14.286909544384846
2015	14.84467142759544
2016	14.692968452475256
2017	14.068450908131226
2018	15.492764143029222
2019	15.242307595465086
2020	14.184410278897944
2021	14.83897740841499
2022	15.053864208776266